Car-roofing.



W. J. BOYER.

CAR ROOFING.

APPLICATION FILED 050.10.1911.

7. m m w n a Patented Dec. 10, 1918.

2 SHEETSSHEET I WW JMWM m W. J. BOYER.

Patented De 1918.

2 SHEETS- T 2.

WILLIAM J. EOYER, OF CHICAGO, ILLINOIS.

CAR-ROOFING.

Specification of Letters Patent.

Patented Dec. 10, 1918.

Application filed December 10, 1917. Serial No. 206,485.

To all whom it may concern Be it known that I, .WJLLIAM J..B0YER, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certainnew and use- -fulImprovements in Car-Roofing, of which the following is a specification.

This invention relates to car construction and in its more intenseaspect to roofing for use in metallic, wood or sheet metal cars now ofgeneral construction.

One of the objects of the present invention is to provide a metallicroof more particularly designed for use on freight cars which will be ofsimple and practical construction and possessing great strength anddurability. A further ob ect is to provide a roof of. the above generalcharacter which will be'water-proof and substantially Ironconductive ofheat and cold. A further object is to provide a roof of the abovecharacter adapted to prevent inside sweating, thereby affecting thecontents of the car. A further object is to provide a roof of the abovegeneral character having relatively few parts which may be easily andinexpensively constructed and assembled. A further object is to providea roof of the first above-mentioned character possessing a certainamount of flexibility thereby to permit relative movement of the partsof a car when subjected to shocks or the like without danger of causingsubsequent leakage.

Other objects will be in part obvious from the annexed drawings and inpart indicated in connection therewith by the following analysis of thisinvention.

This invention accordingly consists in the features of construction,combination of parts and in the unique relations of the members and inthe relative proportioning and disposition thereof, all as morecompletely outlined herein.

To enable others skilled in the art so fully to comprehend theunderlying features thereof that they may embody the same by thenumerous modifications in structure and relation contemplated by thisinvention, drawings depicting a preferred form have been annexed as apart of this disclosure,

and in such drawings, like characters of reference denote correspondingparts throughout all the views, in Which-- Figure 1 is a centraltransverse sectional view of a freight car showing a portion of myinvention applied thereto; v

Fig. 2 is an enlarged longitudinal sectional View showing a portion ofthe roof;

Fig. 3 1s a detail perspective view of a portion of the sheathing;

, Fig. 4 is a detail sectional view taken on the line 4-4, Fig. 1, on anenlarged scale; Fig. 5 is an enlarged sectional view of a portion ofFig. 1 shown adjacent the section line 4--4;

Fig. 6 is a detail showing the fastening means; Figs. 7, 8 and 9 aredetail sectional views of modified forms of sheathing;

Fig. 10 is a detail section taken on the line 10 10, Fig. 9. I

Referring now to the drawings in detail and more particularly to Fig. 1,20 denotes one of the longitudinal side beams of the car to which theside sheathing 21 and molding boards 22 are adapted to be secured. Acentral longitudinal peak beam 23 is provided and is connected to thebeam 20 by means of a plurality of joists or roofing girders 24extending preferably entirely across the car. Additional longitudinalbeams, such as indicated at 25, may be applied where necessary,

A running board 26 is supported above the peak of the car by means ofbrackets 27 which are riveted or otherwise suitably secured'to theroofing sheathing as appears clear in Fig. 1.

All of these parts may be made either of wood or steel as desired,according to the preferred construction and form no part of thisinvention except in so far as they enter into certain combinationshereinafter set forth. 1

The present invention resides more particularly in the roofing and thisis referably made of a plurality of longitudinally disposed sheet metalmembers of the general S-shaped structure shown in Fig. 2 and extendingtransversely of the car. Each member is formed with an upperplain'surface ment one with another as shown more clearly in Fig. 2 toform a double roof with intermediate air spaces which may be filled withinsulating material if desired. iRaised perforations 29 may be used forventilation as shown in Fig. 3. It will also be noted on reference tothis figurethat the parts when assembled will have a certain amount offlexibility and will also be water roof in construction. For instance,shoul any wa- Fig. 7 the upper surface 33 corresponding ter leak betweenany two members it will be caught by the lower surface 28 and drain offat the side of the car. The raised perforations 29 prevent the leakageof water therethrough and into the car.

' In Figs. 7, 8 and 9 are shown cross'sections of modified forms ofsheathing. In

to the surface 27 in Fig. 3 is concaved,

. thereby to convey the water away from the in place.

seam between the two members. In Fig. 8

this same corresponding surface is provided with two grooves 34 and 35for a similar purpose. In Fig. 9 the construction is. substantially thesame as shown in. Fig. 3 only means are provided such as registeringopenings for receiving a bolt '36 to hold the parts Other openings areprovided to receive bolts 37 for attaching the sheathing to bracket 38and thence to the car frame.

Fig. 5 shows in detail the manner of securing the sheathing to the car.A central bolt 40 is preferably provided, the upper end of which isthreaded to receive a nut 41 after the bolt has passed through anopening 42 in the sheathing. A suitable cap 43 fits over the opening,which may be flanged as shown, to prevent a relative upward movement ofthe sheathing with respect to the beam 23.

The side edges of the sheathing are preferably held in place by means ofa fastening device of substantially the form shown in Figs. 1 and 6,that is a member 41 of L-shape cross section is provided with aplurality of teeth-like projections 45 of a size and shape substantiallycorresponding to the distance between the web 30 and the web 32 of Fig.3. This member is bolted or otherwise secured to the molding board 22 bymeans of suitable bolts or the like passing through holes 46. It willthus be seen that when the sheathing is in place the L-shaped member 44:is so positioned as to permit the projections 45 to engage the spacesprovided the parts to be readily menace in each "sheathing member andwhen secured in place positively prevents an upward relative movementthereof.

It is believed that the above description fully sets forth the structureand the manner of installing a metallic roofing of the general characterherein set forth.

The invention is of simple and practical construction yet exceedinglydurable, and one which can not be easily broken by torsional or otherstrains owing to its construction involving the interlocking features.The double roof formed b makes the car water-proo so far as roof leakageis concerned, and is adapted to prevent internal condensation whichmight damage the contents of the car. It is thus seen that the presentinvention is adapted to accomplish, among others, all of the objects andadvantages herein set forth.

I realize that considerable variation is possible in the. details ofconstruction and arrangement of parts without departing from the spiritof my invention, and I ther fore do not intend to limit myself to thespecific form shown and described, except as defined by the appendedclaims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is 1. A metallic roofing composed of a seriesof hollow ventilating and draining channels open at the roof edge, eachof said channels comprising a plurality of sheet metal members, each ofsaid members having upper and lower surfaces in ofiset relation andconnected by a web of irregular crosssection, and each surface beingprovided with a web of similar shape extending in opposite directionsand adapted for interlocking engagement with the next adjacent member,and ventilating openings in said lower surfaces.

2. The combination with a car having a central longitudinal beam andside beams, of a metallic roofing composed of a series of hollowchannels open at the roof edge, each of said channels comprising aplurality of sheet metal members, each of said members having upper andlower surfaces in offset relation and connected by a web of irregularcross-section, and each surface being prothis sheathing vidcd with a webof similar shape extending bers transversely disposed with respect tothe car and forming hollow channels open at the roof edges, means forsecuring said members together, means for securing said 5 members to thecentral peak beam and fastening means co-acting directly with the lowerof said sheet metal members forming said hollow channels and the sidebeams of the car, said last mentioned means compris- 1 ing alongitudinally disposed member of L- shaped cross section having aplurality of projections each. adapted to enter a channel and having itsbody portion secured to the side beam of the car.

In testimony whereof I afiix my signature 15 in presence of twowitnesses.

WILLIAM J. BOYER. Witnesses F. B. HAMMOND, Jr., A. C. BENNETT.

